git.baikalelectronics.ru Git - kernel.git/commit

author	Christophe Leroy <christophe.leroy@csgroup.eu>
	Thu, 28 Oct 2021 12:24:04 +0000 (14:24 +0200)
committer	Michael Ellerman <mpe@ellerman.id.au>
	Mon, 29 Nov 2021 11:49:29 +0000 (22:49 +1100)
commit	acae5e5ae12ee0b22d01245d40f7f1464cad7407
tree	5f9777a60d4fb9baaa913fad98c325ea409bd334	tree \| snapshot
parent	a36a7ff2dd169c545eef1309cbc72699e274422a	commit \| diff

powerpc/ftrace: Activate HAVE_DYNAMIC_FTRACE_WITH_REGS on PPC32

Unlike PPC64, PPC32 doesn't require any special compiler option
to get _mcount() call not clobbering registers.

Provide ftrace_regs_caller() and ftrace_regs_call() and activate
HAVE_DYNAMIC_FTRACE_WITH_REGS.

That's heavily copied from ftrace_64_mprofile.S

For the time being leave livepatching aside, it will come with
following patch.

Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/1862dc7719855cc2a4eec80920d94c955877557e.1635423081.git.christophe.leroy@csgroup.eu

arch/powerpc/Kconfig		diff \| blob \| history
arch/powerpc/kernel/module_32.c		diff \| blob \| history
arch/powerpc/kernel/trace/ftrace.c		diff \| blob \| history
arch/powerpc/kernel/trace/ftrace_32.S		diff \| blob \| history